AI Platform Engineer

Harley Ellis Devereaux Corporation; San Diego (CA); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Harley Ellis Devereaux Corporation seeks an AI Platform Engineer to build and optimize production AI solutions, evaluate large language models, and transform organizational knowledge into secure, accessible intelligence. You will work within the Data & AI team to own defined initiatives and collaborate with developers, data engineers, and business stakeholders.

You'll help design workflows that capture employee expertise for AI-powered apps, develop data models and governance, and contribute to

Qualifications

• 4–6+ years in software/ML/data eng or related field.
• Hands-on experience deploying/ supporting LLM apps in production.
• Experience with AI evaluations, benchmarks, or performance testing.
• Knowledge of RAG, information retrieval, prompt engineering, and context optimization.
• Proficiency in Python and SQL, Git, automated testing, and modern dev practices.
• Experience with cloud apps, APIs, and data integration workflows.
• Understanding of enterprise data governance, privacy and security.
• Ability to deliver complex technical assignments and communicate with stakeholders.

Responsibilities

• Develop and maintain model benchmarking, datasets, and performance baselines for production AI apps.
• Evaluate models, prompts, configurations; document findings and improvements.
• Support preproduction validation of model, prompt, and app changes.
• Develop and optimize retrieval-augmented generation, ranking, prompts, and context management.
• Measure answer quality, token usage, and operating costs to guide improvements.
• Collaborate with app developers to improve shared AI capabilities and UX.
• Deliver defined AI use cases from requirements to implementation and adoption.
• Help design workflows to capture employee expertise for AI apps.
• Create structured data models, skills taxonomies, and knowledge capture workflows; partner with data engineering.
• Work with stakeholders to define requirements and success criteria.

Skills

Python

SQL

Git

LLM apps

AI evaluations

Cloud APIs

Data governance

Stakeholder comms

Education

Bachelor's degree in CS/Software Eng/Data Science

Equivalent practical experience

Tools

Azure OpenAI

Amazon Bedrock

Anthropic

Databricks

Delta Lake

Unity Catalog

MLflow

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

Information Technology Regular Full Time P3 Addison, TX, US

2 days ago Requisition ID: 1760

Salary Range: $120,000.00 To $170,000.00 Annually

HED is hiring an AI Platform Engineer to develop, evaluate, and improve the AI capabilities that support our people and our practice.

About HED

We are a team that is full of ideas, experience, creativity, passionate opinions, insatiable curiosity, uncompromising integrity, commitment, and skill. Our culture is about aspiration, embracing change and challenges, listening to (and learning from) each other, encouraging continual learning, and inspiring collective growth. As an inclusive, integrated architecture and engineering practice, we value the diversity of perspectives, experiences, abilities, and expertise that advance both the work we do, and the world we share.

Position Summary

At HED, we believe the most powerful solutions emerge when expertise, technology, and human insight come together. As a national integrated architecture and engineering firm, we are advancing how artificial intelligence connects knowledge, improves workflows, and empowers our people to deliver exceptional outcomes.

You will build and optimize production AI solutions, evaluate large language models, improve AI-generated responses, and transform organizational knowledge into secure, accessible, and actionable intelligence.

Working within our Data & AI team, you will own defined technical initiatives and collaborate with developers, data engineers, and business stakeholders. This role offers opportunities to influence technical decisions and grow into broader platform leadership.

Essential Functions

AI Model Evaluation and Performance

• Develop and maintain model benchmarking, evaluation datasets, testing methods, and performance baselines across production AI applications.
• Evaluate models, prompts, and configurations against response quality, reliability, cost, latency, and risk; document findings and recommend improvements.
• Support preproduction validation of model, prompt, and application changes.

Context Engineering and AI Optimization

• Develop and optimize retrieval-augmented generation (RAG), retrieval ranking, prompt structures, context management, and caching.
• Measure answer quality, token usage, and operating costs; use results to guide improvements.
• Collaborate with application developers to improve shared AI capabilities and user experiences.

AI Solution Development and Delivery

• Deliver defined AI use cases from requirements and design through implementation, testing, documentation, adoption, and improvement.
• Help design workflows that capture and organize employee expertise, skills, and competencies for use in AI-powered applications.
• Develop structured data models, skills taxonomies, and knowledge capture workflows; partner with data engineering to integrate governed datasets.
• Work with business stakeholders to define requirements, success criteria, and practical solutions.

Data Governance and Responsible AI

• Apply privacy, security, data classification, consent, retention, and access-control requirements to AI solutions and datasets.
• Support dataset quality, lineage, ownership, documentation, and auditability.

Technical Collaboration and Innovation

• Contribute to architecture discussions, technical reviews, coding standards, automated testing, CI/CD, and code reviews.
• Use AI-assisted development tools responsibly and share technical knowledge with colleagues.
• Evaluate emerging generative AI and agentic technologies for practical application at HED.

Requirements

• Approximately 4–6+ years of experience in software engineering, machine learning engineering, data engineering, or a related technical discipline.
• Hands‑on experience developing, deploying, or supporting LLM applications in production.
• Experience implementing AI evaluations, benchmarks, or performance testing.
• Working knowledge of RAG, information retrieval, prompt engineering, and context optimization.
• Proficiency in Python and SQL, Git, automated testing, and modern software development practices.
• Experience with cloud applications, APIs, and data integration workflows.
• Understanding of enterprise data governance, privacy, and security.
• Ability to independently deliver complex technical assignments and communicate effectively with technical and nontechnical stakeholders.

Preferred Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Data Science, Information Systems, or a related field, or equivalent practical experience.
• Experience with Azure OpenAI, Amazon Bedrock, Anthropic, or comparable AI platforms.
• Familiarity with Databricks, Delta Lake, Unity Catalog, MLflow, or similar platforms.
• Experience with AI agents, automated workflows, experiment tracking, or multi-model systems.

Physical Requirements

• Prolonged periods of sitting at a desk and working on a computer.
• Must be able to effectively communicate in writing and verbally via phone, video conferencing, and in person.
• Visual acuity to perform responsibilities.

We embrace a hybrid model that promotes both autonomy and collaboration, including the freedom to work from home, with regular in-office days to connect with teammates and build culture.

The office is a professional, open-space environment designed for collaborative and independent work.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.